21209145

素因数分解:

$3^1\times 5^1\times {\mathrm{89}}^1\times {\mathrm{15887}}^1$

素因数の和:15984

約数の個数: 16

約数和(自身を含む): 34318080

約数和(自身を除く): 13108935

約数列:

[1, 3, 5, 15, 89, 267, 445, 1335, 15887, 47661, 79435, 238305, 1413943, 4241829, 7069715, 21209145]

約数ペア:

[(1, 21209145), (3, 7069715), (5, 4241829), (15, 1413943), (89, 238305), (267, 79435), (445, 47661), (1335, 15887)]